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16
15 ERROR#
16
INITIALIZE
17
PRINTER SELECT LN#
18
GROUND
19 GROUND
20
GROUND
21 GROUND
22
GROUND
23 GROUND
24
GROUND
25 GROUND
26
NC
3.4 Serial Ports
The ROCKY-3785EVG offers two high speeds NS16C550
compatible UARTs with Read/Receive 16 byte FIFO serial ports.
CN2
: COM1
CN8
: COM2
•
CN2 : COM1 10-pin Connector
PIN NO.
DESCRIPTION
1
DATA CARRIER DETECT
(DCD)
2 RECEIVE
DATA
(RXD)
3 TRANSMIT
DATA
(TXD)
4
DATA TERMINAL READY
(DTR)
5 GROUND
6
DATA SET READY
(DSR)
7
REQUEST TO SEND
(RTS)
8
CLEAR TO SEND
(CTS)
9 RING
INDICATOR
(RI)
10 NC
1
14
13
26
1
6
5
10